Built In Air Compressor - Autoinflate Tires (and maybe Windshield Wiper replacement)
The main components that need to be replaced periodically on a Tesla are the tires and windshield wipers. By integrating an air compressor into the vehicle it can be tied together to allow the tires to auto inflate them if they need it. If TPMS detects gain or loss, it compensates. The net result is an increase in vehicle efficiency and safety. Additionally, the same air compressor can potentially be used to spray compressed air onto the windshield during rainstorms reducing the need and use for windshield wipers.